export declare function bidiIterator(str: Uint16Array, initialLevel?: number): Generator<{
    i: number;
    level: number;
}, void, unknown>;
export declare const Emoji = 1;
export declare const Emoji_Presentation = 2;
export declare const Emoji_Modifier = 3;
export declare const Emoji_Modifier_Base = 4;
export declare function emojiIterator(str: Uint16Array): Generator<{
    i: number;
    isEmoji: boolean;
}, void, unknown>;
export declare function scriptIterator(text: string): Generator<{
    i: number;
    script: string;
}, void, unknown>;